At the upper right, choose your user name, and then choose Manage QuickSight.
Choose Security & permissions.
Under QuickSight access to AWS services, choose Add or remove.A screen appears where you can enable all available AWS services.
Select the check boxes for the services that you want to allow. Clear check boxes for services that you don’t want to allow.If you have already enabled an AWS service, the check box for that service is already selected. If Amazon QuickSight can’t access a particular AWS service, its check box is not selected.To fix this, the system administrator needs to delete the IAM policy listed in the error message and reload the Security & permissions screen before you try again.
Choose Update to confirm, or Cancel to return to the previous screen.
As mentioned above, we have already checked the relevant boxes that we want the auto discovery feature to be enabled. However, it is still reflecting the similar error.
Also, If we modify the existing security Security Group (add/alter) SG to the vpc connection, of the data source, will it hamper the existing analysis or dashboards created through that datasource